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    <title>Document</title>
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    <script>
        // key:value
        // 1.声明一个json对象
        var li={
            name:"袁川",
            age:18,
            live:["lol","唱歌","篮球"],
        }    
        // 2.如何获取object的值
        // .在编程语言中表示'的'的意思 
        var li_name=li.name;
        console.log(li_name)
        // 3.给对象添加属性
        li.sex="男"
        console.log(li)
        
    </script>
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